Catching Galactic open clusters in advanced stages of dynamical evolution

Autores
Angelo, M.S.; Piatti, Andres Eduardo; Dias, W. S.; Maia, F. F. S.
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
During their dynamical evolution, Galactic open clusters (OCs) gradually lose their stellar content mainly because of internal relaxation and tidal forces. In this context, the study of dynamically evolved OCs is necessary to properly understand such processes. We present a comprehensive Washington CT1 photometric analysis of six sparse OCs, namely ESO 518-3, Ruprecht 121, ESO 134-12, NGC6573, ESO 260-7, and ESO 065-7. We employed Markov chainMonte Carlo simulations to robustly determine the central coordinates and the structural parameters and T1 × (C - T1) colour-magnitude diagrams cleaned from field contamination were used to derive the fundamental parameters. ESO 518-03, Ruprecht 121, ESO 134-12, and NGC6573 resulted to be of nearly the same young age [8.2≤log(t yr-1) ≤8.3]; ESO 260-7 and ESO065-7 are of intermediate age [9.2≤log(t yr-1) ≤9.4]. All studied OCs are located at similar Galactocentric distances (RG ~6-6.9 kpc), considering uncertainties, except for ESO 260-7 (RG = 8.9 kpc). These OCs are in a tidally filled regime and are dynamically evolved, since they are much older than their half-mass relaxation times (t/trh ≳ 30) and present signals of low-mass star depletion. We distinguished two groups: those dynamically evolving towards final disruptions and those in an advanced dynamical evolutionary stage. Although we do not rule out that theMilkyWay potential could have made differentially faster their dynamical evolutions, we speculate here with the possibility that they have been mainly driven by initial formation conditions.
Fil: Angelo, M.S.. Laboratorio Nacional de Astrofísica Itajuba; Brasil
Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Dias, W. S.. Universidade Federal de Itajubá; Brasil
Fil: Maia, F. F. S.. Universidade Federal de Minas Gerais; Brasil
Materia
OPEN CLUSTERS AND ASSOCIATIONS: GENERAL
TECHNIQUES: PHOTOMETRIC
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/138311
Acceder
id CONICETDig_552fab4da17d23675a0c6ae3b5630798
oai_identifier_str oai:ri.conicet.gov.ar:11336/138311
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Catching Galactic open clusters in advanced stages of dynamical evolutionAngelo, M.S.Piatti, Andres EduardoDias, W. S.Maia, F. F. S.OPEN CLUSTERS AND ASSOCIATIONS: GENERALTECHNIQUES: PHOTOMETRIChttps://purl.org/becyt/ford/1.7https://purl.org/becyt/ford/1During their dynamical evolution, Galactic open clusters (OCs) gradually lose their stellar content mainly because of internal relaxation and tidal forces. In this context, the study of dynamically evolved OCs is necessary to properly understand such processes. We present a comprehensive Washington CT1 photometric analysis of six sparse OCs, namely ESO 518-3, Ruprecht 121, ESO 134-12, NGC6573, ESO 260-7, and ESO 065-7. We employed Markov chainMonte Carlo simulations to robustly determine the central coordinates and the structural parameters and T1 × (C - T1) colour-magnitude diagrams cleaned from field contamination were used to derive the fundamental parameters. ESO 518-03, Ruprecht 121, ESO 134-12, and NGC6573 resulted to be of nearly the same young age [8.2≤log(t yr-1) ≤8.3]; ESO 260-7 and ESO065-7 are of intermediate age [9.2≤log(t yr-1) ≤9.4]. All studied OCs are located at similar Galactocentric distances (RG ~6-6.9 kpc), considering uncertainties, except for ESO 260-7 (RG = 8.9 kpc). These OCs are in a tidally filled regime and are dynamically evolved, since they are much older than their half-mass relaxation times (t/trh ≳ 30) and present signals of low-mass star depletion. We distinguished two groups: those dynamically evolving towards final disruptions and those in an advanced dynamical evolutionary stage. Although we do not rule out that theMilkyWay potential could have made differentially faster their dynamical evolutions, we speculate here with the possibility that they have been mainly driven by initial formation conditions.Fil: Angelo, M.S.. Laboratorio Nacional de Astrofísica Itajuba; BrasilFil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; ArgentinaFil: Dias, W. S.. Universidade Federal de Itajubá; BrasilFil: Maia, F. F. S.. Universidade Federal de Minas Gerais; BrasilWiley Blackwell Publishing, Inc2018-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/138311Angelo, M.S.; Piatti, Andres Eduardo; Dias, W. S.; Maia, F. F. S.; Catching Galactic open clusters in advanced stages of dynamical evolution; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 477; 3; 7-2018; 3600-36220035-87111365-2966CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/477/3/3600/4963760info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty875info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:40:14Zoai:ri.conicet.gov.ar:11336/138311instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:40:14.765CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Catching Galactic open clusters in advanced stages of dynamical evolution
title Catching Galactic open clusters in advanced stages of dynamical evolution
spellingShingle Catching Galactic open clusters in advanced stages of dynamical evolution
Angelo, M.S.
OPEN CLUSTERS AND ASSOCIATIONS: GENERAL
TECHNIQUES: PHOTOMETRIC
title_short Catching Galactic open clusters in advanced stages of dynamical evolution
title_full Catching Galactic open clusters in advanced stages of dynamical evolution
title_fullStr Catching Galactic open clusters in advanced stages of dynamical evolution
title_full_unstemmed Catching Galactic open clusters in advanced stages of dynamical evolution
title_sort Catching Galactic open clusters in advanced stages of dynamical evolution
dc.creator.none.fl_str_mv Angelo, M.S.
Piatti, Andres Eduardo
Dias, W. S.
Maia, F. F. S.
author Angelo, M.S.
author_facet Angelo, M.S.
Piatti, Andres Eduardo
Dias, W. S.
Maia, F. F. S.
author_role author
author2 Piatti, Andres Eduardo
Dias, W. S.
Maia, F. F. S.
author2_role author
author
author
dc.subject.none.fl_str_mv OPEN CLUSTERS AND ASSOCIATIONS: GENERAL
TECHNIQUES: PHOTOMETRIC
topic OPEN CLUSTERS AND ASSOCIATIONS: GENERAL
TECHNIQUES: PHOTOMETRIC
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.7
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv During their dynamical evolution, Galactic open clusters (OCs) gradually lose their stellar content mainly because of internal relaxation and tidal forces. In this context, the study of dynamically evolved OCs is necessary to properly understand such processes. We present a comprehensive Washington CT1 photometric analysis of six sparse OCs, namely ESO 518-3, Ruprecht 121, ESO 134-12, NGC6573, ESO 260-7, and ESO 065-7. We employed Markov chainMonte Carlo simulations to robustly determine the central coordinates and the structural parameters and T1 × (C - T1) colour-magnitude diagrams cleaned from field contamination were used to derive the fundamental parameters. ESO 518-03, Ruprecht 121, ESO 134-12, and NGC6573 resulted to be of nearly the same young age [8.2≤log(t yr-1) ≤8.3]; ESO 260-7 and ESO065-7 are of intermediate age [9.2≤log(t yr-1) ≤9.4]. All studied OCs are located at similar Galactocentric distances (RG ~6-6.9 kpc), considering uncertainties, except for ESO 260-7 (RG = 8.9 kpc). These OCs are in a tidally filled regime and are dynamically evolved, since they are much older than their half-mass relaxation times (t/trh ≳ 30) and present signals of low-mass star depletion. We distinguished two groups: those dynamically evolving towards final disruptions and those in an advanced dynamical evolutionary stage. Although we do not rule out that theMilkyWay potential could have made differentially faster their dynamical evolutions, we speculate here with the possibility that they have been mainly driven by initial formation conditions.
Fil: Angelo, M.S.. Laboratorio Nacional de Astrofísica Itajuba; Brasil
Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Dias, W. S.. Universidade Federal de Itajubá; Brasil
Fil: Maia, F. F. S.. Universidade Federal de Minas Gerais; Brasil
description During their dynamical evolution, Galactic open clusters (OCs) gradually lose their stellar content mainly because of internal relaxation and tidal forces. In this context, the study of dynamically evolved OCs is necessary to properly understand such processes. We present a comprehensive Washington CT1 photometric analysis of six sparse OCs, namely ESO 518-3, Ruprecht 121, ESO 134-12, NGC6573, ESO 260-7, and ESO 065-7. We employed Markov chainMonte Carlo simulations to robustly determine the central coordinates and the structural parameters and T1 × (C - T1) colour-magnitude diagrams cleaned from field contamination were used to derive the fundamental parameters. ESO 518-03, Ruprecht 121, ESO 134-12, and NGC6573 resulted to be of nearly the same young age [8.2≤log(t yr-1) ≤8.3]; ESO 260-7 and ESO065-7 are of intermediate age [9.2≤log(t yr-1) ≤9.4]. All studied OCs are located at similar Galactocentric distances (RG ~6-6.9 kpc), considering uncertainties, except for ESO 260-7 (RG = 8.9 kpc). These OCs are in a tidally filled regime and are dynamically evolved, since they are much older than their half-mass relaxation times (t/trh ≳ 30) and present signals of low-mass star depletion. We distinguished two groups: those dynamically evolving towards final disruptions and those in an advanced dynamical evolutionary stage. Although we do not rule out that theMilkyWay potential could have made differentially faster their dynamical evolutions, we speculate here with the possibility that they have been mainly driven by initial formation conditions.
publishDate 2018
dc.date.none.fl_str_mv 2018-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/138311
Angelo, M.S.; Piatti, Andres Eduardo; Dias, W. S.; Maia, F. F. S.; Catching Galactic open clusters in advanced stages of dynamical evolution; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 477; 3; 7-2018; 3600-3622
0035-8711
1365-2966
CONICET Digital
CONICET
url http://hdl.handle.net/11336/138311
identifier_str_mv Angelo, M.S.; Piatti, Andres Eduardo; Dias, W. S.; Maia, F. F. S.; Catching Galactic open clusters in advanced stages of dynamical evolution; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 477; 3; 7-2018; 3600-3622
0035-8711
1365-2966
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/477/3/3600/4963760
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty875
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844613273389891584
score 13.069144

Publicaciones similares